Embodiments of the present application relate to a search method, a system for searching, and a computer program product for searching. A search method is provided. The method includes receiving a query word string, retrieving a plurality of various product information entries related to the query word string, extracting, from a memory, a first core product word from the query word string, extracting, from the memory, second core product words from the various product information entries, for each second core product word, checking a list of candidate product words relating to a key product word for a presence of the each second core product word, in the event that the each second core product word is present, reducing a weighting of the product information entry corresponding to the each second core product word, and sorting the product information entries according to the adjusted weightings of the product information entries.